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Analysis of 472,688 Severe Cases of COVID-19 in Brazil Showed Lower Mortality in Those Vaccinated against Influenza
Post-graduate Program in Epidemiology and Health Surveillance of the Instituto Evandro Chagas (PPGEVS/IEC), Ananindeua, Pará, Brazil
State Coordinator of the Reference Center for Special Immunobiologicals from the Pará State Public Health Department (CRIE/SESPA), Belém, Pará, Brazil
Post-Graduation Program in Parasite Biology in the Amazon, University of state of Pará, Instituto Evandro Chagas (PPGBPA/UEPA/IEC), Belém, Pará, Brazil
Post-Graduation Program in Parasite Biology in the Amazon, University of state of Pará, Instituto Evandro Chagas (PPGBPA/UEPA/IEC), Belém, Pará, Brazil
Post-graduate Program in Epidemiology and Health Surveillance of the Instituto Evandro Chagas (PPGEVS/IEC), Ananindeua, Pará, Brazil
Post-graduate Program in Epidemiology and Health Surveillance of the Instituto Evandro Chagas (PPGEVS/IEC), Ananindeua, Pará, Brazil
- 1 Post-graduate Program in Epidemiology and Health Surveillance of the Instituto Evandro Chagas (PPGEVS/IEC), Ananindeua, Pará, Brazil
- 2 State Coordinator of the Reference Center for Special Immunobiologicals from the Pará State Public Health Department (CRIE/SESPA), Belém, Pará, Brazil
- 3 Post-Graduation Program in Parasite Biology in the Amazon, University of state of Pará, Instituto Evandro Chagas (PPGBPA/UEPA/IEC), Belém, Pará, Brazil
- 4 Post-Graduation Program in Parasite Biology in the Amazon, University of state of Pará, Instituto Evandro Chagas (PPGBPA/UEPA/IEC), Belém, Pará, Brazil
- 5 Post-graduate Program in Epidemiology and Health Surveillance of the Instituto Evandro Chagas (PPGEVS/IEC), Ananindeua, Pará, Brazil
- 6 Post-graduate Program in Epidemiology and Health Surveillance of the Instituto Evandro Chagas (PPGEVS/IEC), Ananindeua, Pará, Brazil
World Journal of Vaccines·Volume 11 (2021)·Pages 28–32·Published 8 July 2021·DOI10.4236/wjv.2021.113004
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Abstract
Objective: To analyze the severe cases of COVID-19 in Brazil in 2020 and compare those vaccinated and unvaccinated against influenza in invasive ventilation, admission in Intensive Care Unit (ICU) and deaths. Method: Cross-sectional study with public data from the OpenDataSUS platform, regarding confirmed severe cases for COVID-19 in Brazil in the year 2020. Data were analyzed by SPSS, from the chi-square test of independence and binary logistic regression. Results: The population was 472,688 cases and 177,640 deaths, with a lethality of 37.58% in severe cases. The test of independence was highly significant in vaccinated survivors (<0.0001), and regression showed an almost twofold odds ratio for invasive ventilation, ICU admission, and death in unvaccinated cases. Conclusion: We recommend mass influenza vaccination as an adjuvant in combating the COVID-19 pandemic in Brazil.
KeywordsCOVID-19PandemicBrazilInfluenza Vaccine
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